Table 1.
Means (SD) and posterior means of heritability (95% highest posterior density region intervals) of feed efficiency parameters in meat-type chickens
| Trait1,2 | Period3 | Means (SD) | Heritability |
|---|---|---|---|
| MBW | 28 | 158.64 (17.27) | 0.45 (0.44-0.46) |
| BWG | 28-35 | 364.66 (88.04) | 0.51 (0.50-0.52) |
| FI | 28-35 | 655.28 (130.38) | 0.48 (0.48-0.49) |
| FCR | 28-35 | 1.84 (0.33) | 0.49 (0.47-0.51) |
| RFI | 28-35 | 0.00 (79.07) | 0.45 (0.45-0.46) |
| MBW | 35 | 206.74 (20.84) | 0.49 (0.48-0.50) |
| BWG | 35-42 | 455.58 (90.50) | 0.48 (0.46-0.49) |
| FI | 35-42 | 887.25 (146.35) | 0.46 (0.46-0.48) |
| FCR | 35-42 | 2.00 (0.42) | 0.41 (0.41-0.43) |
| RFI | 0.00 (114.07) | 0.42 (0.42-0.43) |
1MBW = Metabolic body weight (BW); BWG = BW gain; FI = feed intake; FCR = feed conversion ratio; RFI = residual feed intake
2All traits measured in (g) except for FCR which was (g/g)
3Age (d) or age range (d) that trait was measured